Loom.



W. I. LUTTON.

LOOM- APPLICATION FILED DEC-10. I912 v 1,139,200. Patented May 11, 1915.

2 SHEETSSHEET I.

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W. l. LUTTON.

LOOM.

APPLICATION FILED DEC. l0. l9l2.

1,139,200. I Patented May 11, 1915.

2 SHEETSSHEET 2.

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WILLIAM J'. LUTTON, OF PATERSON, NEW JERSEY.

LOOlVI.

Specification of Letters latent.

Patented May 11, 1915.

Application filed December 10, 1912. Serial No. 735,958.

To all whom it may concern Be it known that I, WILLIAM J. 'LUTTON, a citizen of the United States, and resident of Paterson, in the county of Passaic and State of New Jersey, have invented a new and useful Improvement in Looms, of which the following is a specification.

My invention relates to looms and more particularly to means for equalizing the stress on the warp threads throughout the entire width of the set or shed and for relieving the stress on all of the warp threads at any moment when it is desired.

In the accompanying drawings, Figure 1 is a view in side elevation of so much of a loom as is required to illustrate a practical embodiment of my invention. Fig. 2 is a front elevation of the same. Fig. 3 is a partial horizontal section in the plane of the line AA, Fig. 2 and Fig. 4: is a detail in section on line BB of Fig. 2, of the cooperative parts at one of the two clamping joints for relieving the warp threads from stress.

The loom frame is denoted by 1, the warp beam by 2, a ratchet toothed wheel on the warp beam by 3, a pawl for engaging the wheel 3 to release and hold the warp beam, by 4:, a reciprocating bar for tripping the pawl, by 5, a floating roller for applying stress to the warp, by 6, a weight bar suspended from the floating roller, by 7, a stop carried by the weight bar, by 8, and a swinging finger carried by the reciproeating bar 5 and adapted to co-act with the stop 8, to raise the reciprocating bar, and thereby bring the bar into position to trip the pawl 4, by 9. The warp threads, denoted by 10, pass from the warp beam 2, under the floating roller 6, and thence up and over a guide roll 11, to the heddles, not shown. The weight bar 7 moves up and down in slots 12 formed in standards 13, 14. at opposite sides of the loom.

It has been found in practice that under the influence of the atmosphere or slight variations in the actual lengths of warps taken up during the weaving operation, the warp threads at one side of the set or shed become stretched more than at the opposite side and the weight bar and floating roller become tilted to a greater or lesser extent and a more or less defective weave results.

To maintain the floating roller and weightciently stiff to prevent it from twisting and hence, when the weight bar has a tendency to tilt and thereby relieve one of its ends from pressure of the weighted arm at that end, the opposite end of the weight bar will immediately receive the entire pressure of the yoke and its two weighted arms, which pressure will tend to force the weight bar and hence the floating roller into a horizontal position. The opposite ends of the weight bar 7, each have fixed thereto a pair of upright bars, the members of which are spaced apart to receive the opposite ends of a clamping rod. The members of a pair of said bars are denoted by 18, 19, and the clamping rod by 20. The latter is supported in a tube 21 set in opposite frame pieces, and one end of the rod is screw-threaded to receive a tail nut 22, the opposite end being provided with a cotter pin 23. A lipped washer 24 is interposed between the cotter pin 23, and the pair of upright bars with its lips overlapping the edges of the bars, and a similar washer 25 is interposed between the pair of upright bars at that end and the tail nut. Washers, denoted by 26 andi27, are also interposed between the standards and the upright bars. As the weight bar 7 rises and falls, the members of the pairs of spaced upright bars carried by its ends move up and down between the washers 24:, 27, at one end and the washers 25, 26, at the opposite end and at any moment when it is desired to relieve the warp threads of stress, the tail nut 22 may be screwed on the rod 20, thereby causing the two sets of washers 24, 27, and 25, 26, to engage the opposite sides of each pair of upright spaced bars and thereby lock the weight bar in position until such time as it becomes desirable to set it free and continue the weaving operation.

What I claim is:

1. In a loom, the combination with a depending floating roller for applying tension to the warp threads, of a device supported independently of the roller and arranged to move up and down with the roller, said device exerting restraint on the roller at points maintained at all times in a horizontal plane, whereby the roller is maintained in its horizontal position under abnormal stresses.

2. In a loom, the combination with a depending floating roller for applying tension 5 to the warp threads, of an equalizing device comprising a rocking support provided with extensions in position to apply Weight on the opposite ends of the floating roller to hold the roller in horizontal position.

3. In a loom, the combination with a depending floating roller for applying tension to the warp threads, of a rocking frame provided with weighted arms separate from the floating rolls and arranged to draw downward on the opposite ends of the floating roller.

4. In a loom the combination with a depending floating roller for applying tension to the warp threads and a weight bar suspended from the roller, of a rocking frame provided with Weighted extensions arranged to rest on the Weight bar to hold it in a horizontal position.

5. In a loom, the combination with a floating roller for applying tension to the warp threads and a weight bar suspended from the floating roller, of bars uprising from the opposite ends of the weight bar, a clamping rod supported by the loom frame and means in cooperative relation With the clamping rod and uprights for clamping the said uprights and hence the weight bar temporarily in position.

In testimony, that I claim the foregoing as my invention, I have signed my name in presence of two witnesses, this fourth day of December, 1912.

WILLIAM J. LUTTON.

Witnesses:

THOMAS W. RANDALL, CHARLES F. MOREHEAD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

' Washington, G. 

